Aperiod 7 element is anelement in the seventhperiod (row) of theperiodic table. It contains 32 elements, beginning atfrancium and ending withoganesson. TheActinides are part of this period. They are all really radioactive. As of 2016, period 7 elements are the last period of elements that have been made.[1]
Period 7 elements haveelectrons in the first sevenelectron shells. All period 7 elements have one or more electrons in the seventh electron shell (valence electrons). When atomic number increases by one, another electron is added. Two electrons join the 7sorbital, 14 electrons join the 5f orbital, ten electrons join the 6d orbital, and six electrons join the 7p orbitals.
